测试上下异色操作echarts 配置项内容和展示

上下异色折线图

      option = {
    title: {
        text: "测试用"
    },
    tooltip: {},
    xAxis: {
        data: ["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"]
    },
    yAxis: {},
    visualMap: {
        show: false,
        dimension: 1,
        pieces: [{
            gte: -20, // 获取最小值
            lte: 0,
            color: "#12ba8a",
            colorAlpha: 0.2
        }], //pieces的值由动态数据决定
        seriesIndex: 1,
        outOfRange: {
            color: "#f43c09",
            colorAlpha: 0.7
        }
    },
    series: [{
            name: "销量",
            type: "bar",
            barWidth: 20,

            itemStyle: {
                barBorderRadius: 10,
                visualMap: false,
                color: function(params) {
                    var index_color = params.value;
                    console.log(index_color, "1111color");
                    if (index_color >= 0) {
                        return {
                            type: "linear",
                            x: 0,
                            y: 1,
                            x2: 0,
                            y2: 0,
                            colorStops: [{
                                    offset: 0,
                                    color: "rgba(255,255,255,0.1)" // 0% 处的颜色
                                },
                                {
                                    offset: 1,
                                    color: "#f43c09" // 100% 处的颜色
                                }
                            ]
                        };
                    } else {
                        return {
                            type: "linear",
                            x: 0,
                            y: 0,
                            x2: 0,
                            y2: 1,
                            colorStops: [{
                                    offset: 0,
                                    color: "rgba(255,255,255,0.1)" // 0% 处的颜色
                                },
                                {
                                    offset: 1,
                                    color: "#12ba8a" // 100% 处的颜色
                                }
                            ]
                        };
                    }
                }
            },

            data: [0, -5, -20, 10, 10, 20]
        },
        {
            name: "邮件营销",
            type: "line",
            stack: "总量",
            smooth: true,

            itemStyle: {
                borderColor: "#fff"
            },
            areaStyle: {
                color: "rgba(160,180,200,0)"
            },
            lineStyle: {},
            data: [0, -5, -20, 10, 10, 20]
        }
    ]
}